#pages {
  width: 100%;
  heigt: 100%;
}
.page {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: none;
  color: white;
}
.page1 {
  background: blue;
  display: block;
}
.page2 {
  background: red;
}
.page3 {
  background: yellow;
}
